Academic Journal
Controlling ultrafast laser writing in silica glass by pulse temporal contrast
| العنوان: | Controlling ultrafast laser writing in silica glass by pulse temporal contrast |
|---|---|
| المؤلفون: | Lei, Yuhao, Wang, Huijun, Shayeganrad, Gholamreza, Svirko, Yuri, Kazansky, Peter G. |
| سنة النشر: | 2024 |
| المجموعة: | University of Southampton: e-Prints Soton |
| الوصف: | We demonstrate that the temporal contrast of femtosecond light pulses is a critical parameter in laser writing inside transparent dielectrics, allowing different material modifications. In particular, anisotropic nanopores in silica glass are produced by high-contrast of 10 7 femtosecond Yb:KGW laser pulses rather than low-contrast of 10 3 Yb fiber laser pulses. The difference originates in the fiber laser storing a third of its energy in a post-pulse of up to 200 ps duration. The absorption of this low-intensity fraction of the pulse by laser-induced transient defects with relatively long lifetime and low excitation energy, such as self-trapped holes, drastically changes the kinetics of energy deposition and the type of material modification. We also demonstrate that low-contrast pulses are effective in creating lamellar birefringent structures, possibly driven by a quadrupole nonlinear current. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/octet-stream; text |
| اللغة: | English |
| Relation: | https://eprints.soton.ac.uk/489835/1/2401.09055; https://eprints.soton.ac.uk/489835/2/ol-49-9-2385.pdf; Lei, Yuhao, Wang, Huijun and Shayeganrad, Gholamreza , et al. (2024) Controlling ultrafast laser writing in silica glass by pulse temporal contrast. Optics Letters, 49 (9), 2385-2388. (doi:10.1364/OL.522307 ). |
| الاتاحة: | https://eprints.soton.ac.uk/489835/ https://eprints.soton.ac.uk/489835/1/2401.09055 https://eprints.soton.ac.uk/489835/2/ol-49-9-2385.pdf |
| Rights: | accepted_manuscript ; cc_by_4 |
| رقم الانضمام: | edsbas.488225E3 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |